Rotary engine.



'N. 0. ALLYN. ROTARY ENGINE.

4 APPLICATION FILED MAR. 6, 1905. RENEWED MAY 28, 1909.

1,028,316. Patented June 4, 1912.

5 SHEETS-SHEET 1.

animator,

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a Hmmua N. 0 ALLYN.

' ROTARY ENGINE. APPLICATION FILED MAR. 6, 1905. RENEWED MAY 28, 1909.

1,028,316, Patented June 4,1912.

5 MEETS-SHEET 2.

@luuevitoi wihmoou I 011.919;

-1 I.0.ALLYN. ROTARY ENGINE. APPLICATION FILED MAR. 6, 1905. RENEWED MAY 28, 190!!- 1 ,028',316. Patented June 4, 1912.

s SHEETS-SHEET a.

WihuzaS-aa A Q 176a fC/ N. 0. ALLYN.

ROTARY ENGINE.

APPLICATION FILED MAR. 6; 1905. nmmwnn MAY-28, 1909.

1,028,316, Patented June 4. 1912.

5 SHEETS-SHEET 4.

'NLO. ALLYN.

ROTARY ENGINE. v APPLIOATION II-LED MAR. e, 1905. mmnwnn MAY 2a, 1909.

1,028,316. Patented June 4,1912.

5 SHEETS-SHEET 5.

' I attend-9 1 Wilina'gwa stroke after an explosion and is held open pivoted to a weight 37 movable longitudimaking such return ilfili0r clear the several admission ports 96 leading .t'rom the compression chambers into the piston cylinders. These ports 26 are torniedatan angle of about 5) degrees. that is. they are shaped toward the outer or explosion ends of the cylinders. so as to facilitate the admission of the compressed gases thcreinto. As the gases are entering a cylinder the burned gases are/ being exhausted therefrom by the unscating of an exhaust-valve, 27 by a cam 28 on one of the fixed sleeves the rods of the several exhaust-valves carrying rollers 30 for engaging the cam. Each exhaust valve is unseated when its respective piston has traveled about sercn-eighths of its working on the return stroke until the piston pass es port 26, thereby allowing nearly all buri'iell gases to escape to the air before the freshlyadniittcd are under compression on the" outward movement of the piston. Then the compression begins in theouter ends ofthc cylinders. and at the same. time the. pistons on their inner sides are drawing in a fresh charge of the explosive mixture. Vi'hcn the piston reaches the limit of its outer movement the charge is exploded by an electric spark generated from a suitable ignitcr. conventionally indicated at 31. This occurs in each cylinder in each revolution, and when four cylinders are employed an impulse is obtained at every quarter turn of the engine. The exhaust valves of the two pairs of cylinders are located on opposite sides of the casing.

Any suitable means may be e aployed for supplying the gases to the casing l have shown in Fig. 2 a pipe 31 for this purpose. 1 such pipe being passed through a slotting box 31 of one of the trunnious and also through the oil chamber and ring 10 thereof, opening at its inner end. into the central chamber of the casing.

I have indicated in Fig. 1 suitable circuit closing means for generating the spark for exploding each charge. It comprehends a ring 32 surrounding one of the casmgsleeves 3, and movable therewith, being capable also of being turned axially independently oi" the, casing to advance or retard ignition. Set in the periphery of this ring are contacts 33, one for each cylinder. connected by wires 11; to the several igniters. I These con-- tacts are designed to engage a stationary insulated brush 34;. to which is connected one wire :0 of a battery a. The other pole of the battery is grounded on the engine frame. To provide for automatically advancing the spark as the speed of the engine increases, I connect tothe contact-carrying ring one arm 35 of a governor, the other arm 36 thereof being attached directto the engine casing. The other ends of these arms are nally of a rod 38 having at its inner end a swivelcd connection to the casing. The tension of spring 39 surrounding this rod is controlled by a nut -10, said spring tending to hold the weight in its normal position at the inner end of the rod. In starting. the governor weight being in its normal position the explosions will occur when the cranks piston cylinders are formed with exterior i webs or ribs 41 to aid in the induction or air to carry oil the heat of the cylinders, thereby rendering the use sary.

It is well known in. the art that rotary engines employing fixed crank shafts allow of but such limited angles to theseveral piston rods when in position for most eil'ectirely securing the greatest power under an erq ilosicn, that most of the force is expended in acting in lines tending to force the cylinders and the crank shaft apart. If the cranks of these shafts could stand at a greater an le to the pistons then the pressure applic the latter would g' 'e a greater amount at power. In my engine, on the other hand. the crank-shaft instead of being stationary i rotatable. The advantages thereof will be better understood by'refcrence to the igrammatic sho wing of Fig. 5. in th' l a 4-? represents the crank pin for opposite 'vlinders shown as horizontally (lisp l of water jackets unnecesl. w ile designates the crank-pin for the re: i cally-disposed cylinders. It will be seen that the two, crank-pins are coin-distant tro'm the eccentrically-arrar d cranlwhatt 7. Now. for the sake of illu tration. l t it be supposed that power applied to the up per cf the vertically disposed pistonrs. piston will be driven downward, and the fulcrum of its crank being at 7 gives to the crank pin at 4 2 an upward movement. force being applied against the several guideways in the direction of the arrow this way the loi'igitndinal reciprocations of the pistons are transferred into a rotary action to the casing, cylinoers and pistons. Thus it will be seen thatthere is less wear on the cylinder walls on account of the direct line ot movementof the cross-heads in the guide ways. Furthermore no pitman rods are used, nor is it necessary to employ trunk pistons now common in gaScnginQs, nor to use cross-head bearings in the piston-head. Instead, the several piston rods are secured directly to the pistons and opposite rods are secured together.

Sin'ce anexplosion occurs at every quarter revolution the necessity of maintaining a high-speed to secure suflicient power is obviated. It is obvious that with a given weight the slower the speed the longer the life. Aside from the fact that the use of a fiy- 'vheel is unnecessary, another advantage resides-i'irthe avoidance of vibration, rendering the engine especially adaptable to use in motor vehicles and motor boats.

1 .claim as my invention 1. Arotary engine comprising, i nation, a revolnble casing conta rig a crank chamber, a plurality of cylinders {carried by the casing'and arranged oppositely in pairs, the pairs being in difierent transverse planes, a series of independent and detachable compression chambers, one for each cylinder, carried by the casing at the sides of the inner ends of the cylinders, and each having an opening communicating with the crank chamber said pistons in such cylinders being arranged in pairs, rods for said pistons, cross-heads carried by said piston 'rods to which the latter are rigidly connected, and a rotatable crank shaft upon the cranks of which said cross-heads are mounted, each cylinder having two ports connected with its respective compression chamber, one port being at theinner extremity of the cylinder and the other in position to be uncovered when the piston is at its inward-limit of movement,

for the escape of the explosive mixture in the outer extremity of the cylinder, "said mixture having been compressed in the compression chamber during the -,-inward movement of the piston.

' 2. A rotary engine comprising, in combi:

nation, a revoluble casing, a plurality of cylinders carried by andfastened into the casing and arranged oppositely in pairs, the pairs being in different transverse planes, said pistons in such cylinders being arranged in pairs, rods for said pistons, cross-heads I carried by said piston rods to which the latter are rigidlyconnected, 'a rotatable crank shaft upon the cranks of which said cr'oss-. heads are mounted, and removable guideways' in said casing for said cross-heads, said guideways being held ,in ner ends of the cylinders, have stufiing boxes through which said piston rods are passed. i

3. A rotary engine comprising, in combiplace by the in which inner ends nation, a re oluble casing, a plurality .of

cylinderscarried by and fastened intothe casing and arranged oppositely n pairs, the pairs being in 'dlfiGI'GIll? transverse planes,

said pistons in such cylinders being arranged in pairs, rods forsaid pistons, crossheads carried by said piston rods to which the latter are rigidly connected, a rotatable crank shaft upon the cranks of which said cross-heads are mounted, removable guideways in said casing for said cross+ heads, and screw plugs, forming the inner ends of the piston cylinders, for holding said guideways and having stufling boxes through which saidpiston rods are passed.

4; A'r'otary explosive engine comprising, in lgcombination, a revoluble casing, a pluralgity of cylinders carried by the casing and arranged oppositely in pairs, the pairs being in -different transverse planes, pistons in such cylindersarranged-in pairs, rods for said pistons, a rotatable crank shaft to the cranks of which said pistonrods are connected, stationary sleeves around which said casin revolves said sleeves havin 0 en- 'mgs eccentric of the axis of rotation of the casing and wherein said crank shaft fits, said sleeves having 011 containing chambers and means operated by the rotation of the shaft and within the oil chamber, for lubri- .cating the shaft.

5. A rotary explosive engine comprising, in combination, a rev'oluble' casing, a plurality of cylinders carried by the casing and arranged oppositely in pairs, the pairs being in difierent transverse planes, pistons in such cylinders arranged in pairs, rods for said pistons, a rotatable crank shaft to the cranks of which said piston rods are connected, stationary sleeves around which said casing revolves, said sleeves having openings eccentric of the axis of rotation of the casing and wherein said crank shaft fits, said sleeves having oil containing chambers,

and loose bands engaging said shaft and e2;-v

tending into said chambers.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

' NEWELL O. ALLYN.

Witnesses:

GEO. w. rims, S. B, CRAIG. 

